Electric sadiron



M. MURPHY ELECTRIC SADIRON Filed April 9, 1924 Paternal entree: sirmesj PATENT orri ce.

IvIO'RTON'MUR-PHY, or INDIANAPOLIS, INDIANA;

ELEc rPJic Simmons Application filed April 9 To (r72 101mm "it may can earn Be it known that'I, \BTORTON MURPHY, a citizen of the'Un'ited States, residing at -In dianapolis, inthe county of Marion'and' State} of Indiana, have invented new and useful- 1 Improvements in Electric Sad'irons,'-

ot which the" following is'a specification.

Electric sad irons tor ClODlBStICIlSH particularly, are operated by unskilled persons who-through- IDiSSUSQ' or carelessnessburn out the heating.- element, and frequently use the iron so hot as to V damage the'clothes.

The'object oft-his invention is'to assemble theresistanoe:wires for the heating Gl'GlnQllh on-a fiat sheet of insulation which is slidingly inserted in the body of the iron and withdrawn in the sameniannerfor renewal OPI'QPELITS;

Another ob iect' 15 to provide insulation sheets'of selective thicknesses andresistanoe" forslrding insertion below=the heating. ele-' ment to keep tlle'dQOttOhl' or ironing surface of the'iron froni overheating," and also to -131OVlCl621- like slidmgly placed and withdrawn insulation abovethe heating element to prevent 'over heating of the handle;

I acc;o1nplish-*the' above principal obj eets a nd other minor ones which will hereinafter appear; by the mechanism illustrated in the accompanying drawing, in whioh- Fig. 1; is a' longitudinal vertical sectionot my'iniprored iron assembled. Fig. Qis a rear end elevation of same with the end plate closure removed to show the 1nter1or arrangement of parts and Fig. 3, is a top" Pltli VlGWOf the heating elementcomprising" wires on'afl'fla't sheetofinsulation; de

tached from the rest of the iron.

Like characters or" reference indicate; like parts in the several views of the drawing.

The body' l of the iron'is cast-in any usual A" handle 5 is supported by'a strap in'etal mend-- her having a 'horizontal portion '6, and up= and suitable size and external shape.

wardlybent ends 7 and S. The port ion ti is secured by'two sorews' il," 9; to the topjof" the iron inthe-manner showng' a-nd thehan dle is recessedat'eaeh end toreceive the terminals of ends? and-8i which" are seeu'red by screws 10; tothe handle.-

The interior ofth'ebodyd lSHltLClQ-llOllow by arectangular recess 11, in cross sec tion, extending tron'i the rear toward the tapering" front end for a distance approxi mately as shown in Fig, This cored out in te t ng h o y, and. at the same time 1924 Serial NO. 705,155.

longitudinal \g roove'slQ 12 are formed, one in each of the vertioal walls of the recess about midway between the upper and lower horizontal walls of said'recess, in the manner as shown in Figs; 1 and 2-. The recess lliscosedat its rear end bythe plate 13,

which is removably'secured by screws 1%, let-u A'pair of socketpins"15','-15; tor the at tachnient thereto oi 'the usual circuit con nectioir(notshown) are"seated"in the rearwa-rdlyslopin'g' roof 16, of the iron, so sloped to-inorease the clearance between the pins andThehandleni'ember Ti The'pins are 11rsulated-from 'the roof l6, and are threaded at 'their'inner ends to receive the'nuts l7 and 18, on either side of the root, the under or inner side of the root being recessed to increase the" clearance for the accommodation ota'pair of metal washers'between the nut 18 and the roof 16, between which the con ducting wires l9 and 20, are respectively held. Thedncreased clearance secured by said recessreduces'the danger of short-cirout-ing; which is *further lessened by extendingthe' top insulation sheet under the recess-in the manner shown in Fig. 1 into close proximity with the nut 18.

The heating element comprises a spirally wound-"resistancewire 22 and a sheet 23 f asbestos or other insulation of sufiicient thickness"andst-iffness; The sheet 23 has a series of marginal perforations 24, through which the wirecoil's 21179}WOUDdTl'OlIl side to side inthenranner sh'ox'vnrto provide the re quired length of wire in the circuit. The

endsof the wire are looped 'througlrthe last' holes near the broador 'rearend of the insulation 23, and around "the adjacent end of the insulation to hold th'e'wires in place, and then the extreme ends'terniinate 'with round loops ready for insertion on the respectiie binding posts under their nuts 17 and 18-." This heati'ngelenient is assembled in-the hollowof the body 4- by sliding the edges' ot -'the"sheelt23- in the g 'rooves 12, 12, in the manner shown and connecting the? lll? similar sheet of insulation 27, is introduced between the heating element and the top of the iron, in the manner shown. A plurality of layers of the insulation 26 and 27 will preferably be used instead of a single thick piece, in order to afiord regulation by varying the number used, as the current and other conditions of use may require, to keep from over heating the iron and burning the clothes or the hand of the operator. There is space enough in the hollow in terior to receive a maximum number of insulating sheets, and asthey rest loosely upon the bottom of the hollow interior or upon the heating element, the number of sheets of insulations can be varied easily by any inexperienced person, and as the sheet with the heating element is easily slid into place and is as easily withdrawn in like manner, it can be taken out easily and quickly by an inexperienced person, for repairs or for renewal. Barring these repairs and renewals which are cheaply made, the iron is'practically indestructible in the hands of inexperienced users.

Having thus fully described my invention, what I claim as new and wish'to secure by Letters Patent of the United States,

1. A sad iron having a hollow interior substantially rectangular in cross section and having a longitudinal groove in each side wall intermediate the top and bottom of the hollow interior, a heating element mounted on a sheet supported by the grooves which it slidingly enters from' their ends, and an insulation sheet slidingly inserted in the hollow interior below the heating element, and a second insulation sheet slidingly inserted therein above the heating element.

2. A sad iron having a hollow interior substantially rectangular in cross section and having'a longitudinal groove in each side wall intermediate the top and bottom of the hollow interior, a heating element mounted on a sheet of insulation and sup ported by the grooves in which the sheet is slidingly entered from their ends, an insulation sheet slidingly inserted in the hollow interior below the heating element, a second insulation sheet slidingly inserted above the heating element, and means for varying the insulation below and above the heating element.

3. A sad iron having a hollow interior substantially rectangular in cross section and having a longitudinal groove -in each side wall intermediate the top and bottomof the hollow interior, a heating element mounted on a sheet of msulation and supported by the grooves by the entrance thereinsulation.

in of the sheet, a second sheet of insulation slidingly inserted in the hollow interior of the iron below the heating element, and a third sheet of insulation slidingly insert-ed above the heating element, said second and third insulations being in a plurality of separable and individually removable laminations.

4. A sad iron having a hollow interior substantially rectangular in cross section and a downwardly sloping rear roof, said interior being correspondingly recessed under the sloping root, a pair of conductor posts passing through the sloping roof and provided with wire attaching means on their inner ends, said hollow iron interior having longitudinal grooves in each side wall, a sheet of insulation slidingly assembled in said grooves, a resistance wire supported by the insulation and connected with the conductor posts, sheet insulation slidingly inserted below the first sheet of insulation and other sheet insulation sliding ly inserted above said first sheet otinsulation. I

5. A sad iron having a hollow interior" substantially rectangular in cross section and a downwardly sloping rear roof, said iron interior being correspondingly recessed under the sloping roof, a pair of conductor posts passing through the sloping roof and provided with inner end wire attaching means, said hollow iron interior having a longitudinal groove in each of its side walls, sheet insulation slidingly assembled in said grooves, a resistance wire supported by the insulation and connected with the conductor posts, laminated sheet insulation slidingly inserted below the first sheet of insulation and other laminated sheet insulation slidingly inserted above said first sheet of insulation. v

6. A sad iron having a hollow interior substantially rectangular in cross section and a downwardly sloping rear roof, said iron interior being correspondingly recessed under the sloping roof, a pair of conductor posts passing at right angles through the sloping roof and provided with inner end wire attaching means, said hollowiron interior having a longitudinal groove in each of its side walls, sheet insulation slidingly assembled in said groves, a resistance wire supported by the insulation and connected with the conductor posts,- other sheet insulation slidingly inserted below the first sheet insulation, other sheet insulation slidingly inserted above said first sheet of insulation,

and means opera-ted outsideoi the iron for longitudinally adjusting said first sheet of MORTON MURPHY; 

